condition mean min max ZT0-3 151.824 151.824 151.824 ZT4-7 154.738 154.738 154.738 ZT8-11 160.023 160.023 160.023 ZT12-15 179.85649999999998 179.85649999999998 179.85649999999998 ZT16-19 158.5575 158.5575 158.5575 ZT20-23 148.3665 148.3665 148.3665